/Engine/Plugins/Experimental/CharacterFXEditor/BaseCharacterFXEditor/Source/BaseCharacterFXEditor/Public/SBaseCharacterFXEditorViewport.h
SEditorViewport.
virtual [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > MakeViewportToolbar()